Questioning sexuality

i am still kind of in the closet but i get hit on by "straight guys". My last hook up was apparently straight, but it only amounted to a hand job because i lost interest but didn't want to be flakey. Is this normal? i kind of question whether i am gender fluid because of this. I am still a little ashamed to be gay , and i think i am most probably fluid in my sexuality. Has anyone here been through a phase where they are confused about their sexuality and gender, and thus found it hard to fit in?